中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

52 records (took 0.013 seconds)

    Core structure and interleaved DC—DC converter topology
    12.
    发明授权
    Core structure and interleaved DC—DC converter topology 有权
    核心结构和交错DC-DC转换器拓扑

    公开(公告)号：US07046523B2

    公开(公告)日：2006-05-16

    申请号：US10302095

    申请日：2002-11-21

    Applicant: Jian Sun ,  Xiukuan Jing ,  Sriram Chandrasekaran ,  Vivek Mehrotra

    Inventor： Jian Sun ,  Xiukuan Jing ,  Sriram Chandrasekaran ,  Vivek Mehrotra

    IPC: H02M3/335 ,  H02M7/5387 ,  H02M5/42

    CPC classification number: H02M7/043 ,  H01F3/08 ,  H01F17/04 ,  H01F30/06

    Abstract: There is disclosed a core structure with a very low profile, high power density and lower losses. The disclosed design allows for a larger core area where the DC fluxes are added, thereby reducing the air-gap requirements in the cores derived from low saturation density materials such as ferrites. The cellular nature of the design can be effectively employed in vertically packaged power converters and modules. Also disclosed is a DC-DC converter topology which preferably employs the disclosed core. N AC drive voltages drive N current doubler rectifiers (CDRs) in accordance with the symmetric modulation scheme; each CDR provides two rectified output currents to an output node. Each AC drive voltage has a switching period Ts. The drive voltages are phase-shifted by Ts/(2*N), such that the rectified output currents of the CDRs are interleaved, thereby reducing output voltage ripple.

    Abstract translation: 公开了具有非常低的轮廓，高功率密度和较低损耗的核心结构。 所公开的设计允许添加DC通量的更大的核心区域，从而降低由诸如铁氧体的低饱和密度材料衍生的芯中的气隙要求。 设计的蜂窝特性可以有效地用于垂直封装的功率转换器和模块。 还公开了优选采用所公开的核心的DC-DC转换器拓扑。 N交流驱动电压根据对称调制方案驱动N个倍增整流器（CDR）; 每个CDR向输出节点提供两个经整流的输出电流。 每个交流驱动电压具有开关周期T SUB。 驱动电压被相移T T / S 2 /（2 * N），使得CDR的整流输出电流交错，从而降低输出电压纹波。

    Core structure
    13.
    发明授权
    Core structure 有权
    核心结构

    公开(公告)号：US06873237B2

    公开(公告)日：2005-03-29

    申请号：US10126477

    申请日：2002-04-18

    Applicant: Sriram Chandrasekaran ,  Vivek Mehrotra ,  Jian Sun

    Inventor： Sriram Chandrasekaran ,  Vivek Mehrotra ,  Jian Sun

    IPC: H01F3/08 ,  H01F17/04 ,  H01F30/06 ,  H02M7/04 ,  H01F27/02

    CPC classification number: H02M7/043 ,  H01F3/08 ,  H01F17/04 ,  H01F30/06

    Abstract: There is disclosed a core structure with a very low profile, high power density and lower losses. Higher core surface area and improved core utilization in terms of flux density are other desirable feature in the disclosed design. The disclosed design also allowed for a larger core area where the DC fluxes are added, thereby reducing the air-gap requirements in the cores derived from low saturation density materials such as ferrites. The cellular nature of the design can also be effectively employed in vertically packaged power converters and modules.

    Abstract translation: 公开了具有非常低的轮廓，高功率密度和较低损耗的核心结构。 在公开的设计中，更高的核心表面积和在磁通密度方面的改进的磁芯利用率是其它期望的特征。 所公开的设计还允许添加DC通量的较大的核心区域，从而降低由诸如铁氧体的低饱和密度材料衍生的芯中的气隙要求。 设计的蜂窝性质也可以有效地用于垂直封装的功率转换器和模块。

    Isolated communications apparatus and power supply system
    17.
    发明授权
    Isolated communications apparatus and power supply system 有权

    公开(公告)号：US11777395B2

    公开(公告)日：2023-10-03

    申请号：US17679386

    申请日：2022-02-24

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Wei Shui ,  Li Zhou

    IPC: H02M1/00 ,  H02M5/22 ,  H02M1/092 ,  H01F27/40 ,  H02M7/04 ,  H02M3/335

    CPC classification number: H02M1/007 ,  H02M1/0074 ,  H02M1/092 ,  H02M5/225 ,  H01F27/40 ,  H01F2027/408 ,  H02M3/33584 ,  H02M7/043

    Abstract: An isolated communications apparatus applied to a transformer. The transformer includes N first rectifier units and a second rectifier unit, and the isolated communications apparatus includes N first control units, a second control unit, and a signal convergence unit. The first control units are connected to the first rectifier units in a one-to-one correspondence. Each first control unit is connected to the signal convergence unit, and the signal convergence unit and the second control unit are connected through an optical fiber. The signal convergence unit is configured to: receive first data packets from the N first control units, send the first data packets to the second control unit, receive at least one second data packet from the second control unit, determine a first control unit corresponding to each second data packet, and send each second data packet to a corresponding first control unit.

    Converter for connecting multiple AC voltage sources to a utility grid without first rectifying the AC to a common DC bus
    19.
    发明授权
    Converter for connecting multiple AC voltage sources to a utility grid without first rectifying the AC to a common DC bus 有权
    用于将多个交流电压源连接到公用电网的转换器，而无需先将交流电整流到公共直流母线

    公开(公告)号：US09368967B1

    公开(公告)日：2016-06-14

    申请号：US14173943

    申请日：2014-02-06

    Applicant: Dietrich Vedder

    Inventor： Dietrich Vedder

    IPC: H02J3/00

    CPC classification number: H02M7/043 ,  H02J3/386 ,  H02M5/458 ,  H02M2001/0077 ,  Y02E10/763

    Abstract: Diodes and switching means as well as an autotransformer connect multiple AC sources of variable frequency and voltage to the utility grid, without first rectifying and thereby transferring the AC input energy to a common DC bus. Instead, the individual positive and negative AC input half waves or parts of those half waves, if and when they occur during a particular time interval, are injected into the positive or negative half wave of the utility AC power directly and respectively. The amount of energy transferred may be controlled by a microprocessor. Assuming the prime mover that generates AC voltages in multiple coils is a windmill, then the required circuitry to accomplish this energy transfer will be physically small enough to allow that circuitry to reside in the windmill itself, and thereby this energy conversion method significantly simplifies the installation of a windmill that uses this energy conversion method.

    Abstract translation: 二极管和开关装置以及自耦变压器将可变频率和电压的多个交流电源连接到公用电网，而无需首先整流，从而将交流输入能量传递到公共直流母线。 相反，单个正和负AC输入半波或这些半波的一部分，如果在特定时间间隔内发生，则分别被注入公用交流电的正或负半波。 传输的能量可以由微处理器控制。 假设在多个线圈中产生AC电压的原动机是风车，则完成该能量传递的所需电路将物理上足够小以允许该电路驻留在风车本身中，由此该能量转换方法显着简化了安装 使用这种能量转换方法的风车。

    JOSEPHSON AC/DC CONVERTER SYSTEMS AND METHOD
    20.
    发明申请
    JOSEPHSON AC/DC CONVERTER SYSTEMS AND METHOD 有权
    JOSEPHSON AC / DC转换器系统和方法

    公开(公告)号：US20150092465A1

    公开(公告)日：2015-04-02

    申请号：US14044220

    申请日：2013-10-02

    Applicant: Quentin P. Herr ,  Anna Y. Herr

    Inventor： Quentin P. Herr ,  Anna Y. Herr

    IPC: H02M7/04

    CPC classification number: B82Y10/00 ,  G06N99/002 ,  H02M7/04 ,  H02M7/043 ,  H03K17/92 ,  H03K19/0008 ,  H03K19/195 ,  H03K19/1952 ,  H03K19/1954 ,  H03K2217/0036

    Abstract: One embodiment describes an AC/DC converter system. The system includes a flux-shuttle loop that is inductively coupled with an AC input signal. The system also includes a plurality of Josephson junctions spaced about the flux shuttle loop that are configured to sequentially trigger in response to the AC input signal and to provide a single-flux quantum (SFQ) pulse that moves sequentially around the flux-shuttle loop that results in a DC output signal being provided through an output inductor.

    Abstract translation: 一个实施例描述了一种AC / DC转换器系统。 该系统包括与AC输入信号感应耦合的磁通穿越回路。 该系统还包括围绕磁通穿梭回路间隔开的多个约瑟夫逊结，其被配置为响应于AC输入信号而顺序地触发并提供在磁通穿梭循环周围依次移动的单通量量子（SFQ）脉冲， 导致通过输出电感器提供直流输出信号。

Patent Agency Ranking